When someone is so fanatically and idealogically driven, they will go to any length and would not care how many of their "brothers" are "martyred". Their desired Ummah, of which they plan to be in charge, would be just fine without some Palestinians. (Assuming they would care at all). Besides, when someone says they want to kill you, take them at their word!
Rohani: Nuclear deal achieves Iran's goals (AP)
from the article: U.S.: Iran's nuclear efforts are anything but peaceful